Olefin polymerization
AssigneePhillips Petroleum Company
InventorsGil R. Hawley, Timothy M. Ramsey, Ronald L. Halterman, Darryl R. Fahey
Life of this patent
Estimating the term…
Abstract
A catalyst system comprising an unbridged bis(2-aryltetrahydro-indenyl) metallocene and a cocatalyst and its use in the polymerization of olefins, especially olefins having 3 or more carbon atoms.
Claims17
A process for producing a polymer in which the isotactic microstructure exceeds the atactic microstructure comprising contacting at least one olefin having at least three carbon atoms with a catalyst system prepared by combining a cocatalyst and bis(2-(para-methoxyphenyl) tetrahydroindenyl) zirconium dichloride.
An isotactic stereoselective polymerization process comprising contacting at least one olefin having at least three carbon atoms with a catalyst system prepared by combining bis(2-(para-methoxyphenyl) tetrahydroindenyl) zirconium dichloride and a cocatalyst selected from organo metallic compounds of metals of Groups IA, IIA, and IIB of the Periodic Table.
Dependencies are inferred from the claim text.